AFNI Message Board

Dear AFNI users-

We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:

https://discuss.afni.nimh.nih.gov

Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.

The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.

Sincerely, AFNI HQ

History of AFNI updates  

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March 06, 2023 11:58AM
> why the F-test and t-test came different?

You can verify this by checking whether the squared t-value is about the same as the F-square.

> there are 11 clusters for F-test and 10 for the t-test

Find out why that extra cluster failed to survive the t-test. Possible reasons: 1) approximation, 2) one-sided vs two-sided. Change your cluster or p-value threshold, and see what happens. This also shows the intrinsic problem with artificial dichotomization. Instead, a highlight-but-not-hide approach is recommended: [www.biorxiv.org]

Gang
Subject Author Posted

3dMVM F test and t test output Attachments

Adury March 05, 2023 04:12PM

Re: 3dMVM F test and t test output

gang March 06, 2023 11:58AM

Re: 3dMVM F test and t test output

ptaylor March 06, 2023 01:17PM

Re: 3dMVM F test and t test output Attachments

Adury March 07, 2023 10:12AM

Re: 3dMVM F test and t test output Attachments

Adury March 07, 2023 10:14AM

Re: 3dMVM F test and t test output Attachments

Adury March 07, 2023 10:18AM

Re: 3dMVM F test and t test output

ptaylor March 07, 2023 03:44PM

Re: 3dMVM F test and t test output Attachments

Adury March 08, 2023 09:19AM

Re: 3dMVM F test and t test output

Adury March 08, 2023 01:30PM

Re: 3dMVM F test and t test output

ptaylor March 08, 2023 04:24PM

Re: 3dMVM F test and t test output

Adury March 08, 2023 09:51PM

Re: 3dMVM F test and t test output

ptaylor March 09, 2023 01:14PM

Re: 3dMVM F test and t test output Attachments

Adury March 21, 2023 10:27PM

Re: 3dMVM F test and t test output

ptaylor March 22, 2023 06:47PM

Re: 3dMVM F test and t test output

ptaylor March 23, 2023 06:18AM

Re: 3dMVM F test and t test output

Adury March 24, 2023 11:11AM